[INFO] cloning repository https://github.com/gluyas/niwa-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gluyas/niwa-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgluyas%2Fniwa-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgluyas%2Fniwa-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bed97251b7a0b4b40881cc8e92755c9c225fd876
[INFO] checking gluyas/niwa-rs against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgluyas%2Fniwa-rs" "/workspace/builds/worker-86/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-86/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gluyas/niwa-rs on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gluyas/niwa-rs
[INFO] finished tweaking git repo https://github.com/gluyas/niwa-rs
[INFO] tweaked toml for git repo https://github.com/gluyas/niwa-rs written to /workspace/builds/worker-86/source/Cargo.toml
[INFO] crate git repo https://github.com/gluyas/niwa-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8e51a05956c19673544f75230c1c595aa6cbcf90e83b55c8e709e3301c8e432
[INFO] running `Command { std: "docker" "start" "-a" "a8e51a05956c19673544f75230c1c595aa6cbcf90e83b55c8e709e3301c8e432", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8e51a05956c19673544f75230c1c595aa6cbcf90e83b55c8e709e3301c8e432", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8e51a05956c19673544f75230c1c595aa6cbcf90e83b55c8e709e3301c8e432", kill_on_drop: false }`
[INFO] [stdout] a8e51a05956c19673544f75230c1c595aa6cbcf90e83b55c8e709e3301c8e432
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c01356c00a4085b05557521d1b0bce366703012b68aea8b20435ca6e47cfeff
[INFO] running `Command { std: "docker" "start" "-a" "1c01356c00a4085b05557521d1b0bce366703012b68aea8b20435ca6e47cfeff", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking niwa-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/util.rs:70:18
[INFO] [stdout]    |
[INFO] [stdout] 70 |         *self += (-rhs.into());
[INFO] [stdout]    |                  ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/util.rs:70:18
[INFO] [stdout]    |
[INFO] [stdout] 70 |         *self += (-rhs.into());
[INFO] [stdout]    |                  ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:55:36
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 println!("{}", err.description());
[INFO] [stdout]    |                                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:55:36
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 println!("{}", err.description());
[INFO] [stdout]    |                                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `nudge`
[INFO] [stdout]   --> src/util.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn nudge(self, dir: Direction) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `snap_to_edge`
[INFO] [stdout]    --> src/util.rs:136:12
[INFO] [stdout]     |
[INFO] [stdout] 136 |     pub fn snap_to_edge <P: Into<GridIndex>> (mut self, dir: Direction, bounds: P) -> GridIndex {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter_rect`
[INFO] [stdout]    --> src/util.rs:151:12
[INFO] [stdout]     |
[INFO] [stdout] 151 |     pub fn iter_rect(self, dir_primary: Direction, dir_secondary: Direction) -> RectIterator {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_within`
[INFO] [stdout]    --> src/util.rs:161:12
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub fn is_within <P: Into<GridIndex>> (self, bound: P) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `component_add`
[INFO] [stdout]    --> src/util.rs:165:12
[INFO] [stdout]     |
[INFO] [stdout] 165 |     pub fn component_add <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `component_diff`
[INFO] [stdout]    --> src/util.rs:170:12
[INFO] [stdout]     |
[INFO] [stdout] 170 |     pub fn component_diff <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/util.rs:261:12
[INFO] [stdout]     |
[INFO] [stdout] 261 |     pub fn new <P: Into<GridIndex>> (range: P, dir_primary: Direction, dir_secondary: Direction) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `of`
[INFO] [stdout]    --> src/util.rs:323:12
[INFO] [stdout]     |
[INFO] [stdout] 323 |     pub fn of <P: Into<GridIndex>> (size: P, val: T) -> Self {
[INFO] [stdout]     |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Dirt`
[INFO] [stdout]   --> src/world.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Dirt,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sand`
[INFO] [stdout]   --> src/world.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Sand,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Stone`
[INFO] [stdout]   --> src/world.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Stone,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Water`
[INFO] [stdout]   --> src/world.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Water,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_blocked`
[INFO] [stdout]   --> src/puzzle.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn is_blocked <P: Into<GridIndex>> (&self, pos: P, dir: Direction) -> Option<PuzzleId> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Complete`
[INFO] [stdout]   --> src/puzzle.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     Complete,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_walls`
[INFO] [stdout]    --> src/puzzle.rs:126:12
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn set_walls(&mut self, dirs: &[Direction]) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/util.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         self + dir;
[INFO] [stdout]    |         ^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let _ = self + dir;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `nudge`
[INFO] [stdout]   --> src/util.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn nudge(self, dir: Direction) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `snap_to_edge`
[INFO] [stdout]    --> src/util.rs:136:12
[INFO] [stdout]     |
[INFO] [stdout] 136 |     pub fn snap_to_edge <P: Into<GridIndex>> (mut self, dir: Direction, bounds: P) -> GridIndex {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter_rect`
[INFO] [stdout]    --> src/util.rs:151:12
[INFO] [stdout]     |
[INFO] [stdout] 151 |     pub fn iter_rect(self, dir_primary: Direction, dir_secondary: Direction) -> RectIterator {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_within`
[INFO] [stdout]    --> src/util.rs:161:12
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub fn is_within <P: Into<GridIndex>> (self, bound: P) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `component_add`
[INFO] [stdout]    --> src/util.rs:165:12
[INFO] [stdout]     |
[INFO] [stdout] 165 |     pub fn component_add <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `component_diff`
[INFO] [stdout]    --> src/util.rs:170:12
[INFO] [stdout]     |
[INFO] [stdout] 170 |     pub fn component_diff <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/util.rs:261:12
[INFO] [stdout]     |
[INFO] [stdout] 261 |     pub fn new <P: Into<GridIndex>> (range: P, dir_primary: Direction, dir_secondary: Direction) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `of`
[INFO] [stdout]    --> src/util.rs:323:12
[INFO] [stdout]     |
[INFO] [stdout] 323 |     pub fn of <P: Into<GridIndex>> (size: P, val: T) -> Self {
[INFO] [stdout]     |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Dirt`
[INFO] [stdout]   --> src/world.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Dirt,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sand`
[INFO] [stdout]   --> src/world.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Sand,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Stone`
[INFO] [stdout]   --> src/world.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Stone,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Water`
[INFO] [stdout]   --> src/world.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Water,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_blocked`
[INFO] [stdout]   --> src/puzzle.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn is_blocked <P: Into<GridIndex>> (&self, pos: P, dir: Direction) -> Option<PuzzleId> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Complete`
[INFO] [stdout]   --> src/puzzle.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     Complete,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_walls`
[INFO] [stdout]    --> src/puzzle.rs:126:12
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn set_walls(&mut self, dirs: &[Direction]) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/util.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         self + dir;
[INFO] [stdout]    |         ^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let _ = self + dir;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "1c01356c00a4085b05557521d1b0bce366703012b68aea8b20435ca6e47cfeff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c01356c00a4085b05557521d1b0bce366703012b68aea8b20435ca6e47cfeff", kill_on_drop: false }`
[INFO] [stdout] 1c01356c00a4085b05557521d1b0bce366703012b68aea8b20435ca6e47cfeff